Celaya Seasonal Pollution
Celaya usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in September. The page uses OpenAQ-derived daily history for 6 mapped monitoring locations in Guanajuato, Mexico.
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Average EPA AQI
77
Rank 25 of 86 cities by average AQI
PM2.5
23.5
ug/m3 annualized city average
Seasonality
May
Cleanest: September
Health indicator
1.1
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Celaya
84
80
83
93
98
74
50
-
49
53
67
68
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Celaya, the current global analytics build covers 278 daily rows from 2024-01-01 to 2025-01-01. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.